172998473 has 8 divisors (see below), whose sum is σ = 174726720. Its totient is φ = 171278800.

The previous prime is 172998431. The next prime is 172998481. The reversal of 172998473 is 374899271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172998473 - 2¹² = 172994377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172998403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42998 + ... + 46848.

It is an arithmetic number, because the mean of its divisors is an integer number (21840840).

Almost surely, 2^172998473 is an apocalyptic number.

It is an amenable number.

172998473 is a deficient number, since it is larger than the sum of its proper divisors (1728247).

172998473 is a wasteful number, since it uses less digits than its factorization.

172998473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287.

The product of its digits is 762048, while the sum is 50.

The square root of 172998473 is about 13152.8883900077. Note that the first 3 decimals coincide. The cubic root of 172998473 is about 557.2038261415.

The spelling of 172998473 in words is "one hundred seventy-two million, nine hundred ninety-eight thousand, four hundred seventy-three".